公开(公告)号：US12209192B2

公开(公告)日：2025-01-28

申请号：US16755936

申请日：2018-10-25

Applicant: Sanford L.P.

Inventor： Wing Sum Vincent Kwan ,  Marty Sexton

IPC: C09D11/17 ,  B43K7/01 ,  B43K7/02 ,  C08K3/013 ,  C08K5/00 ,  C08L101/00 ,  C09D11/20

Abstract: High opacity permanent ink formulations comprising a solvent, a polymer-based opacifier, a coloring agent, a resin, and a humectant, wherein the ink formulation displays a viscosity of less than about 50 cP, are provided herein.

公开(公告)号：US11993099B2

公开(公告)日：2024-05-28

申请号：US18023265

申请日：2021-08-27

Applicant: KABUSHIKI KAISHA PILOT CORPORATION

Inventor： Yusuke Sanada ,  Hidenori Kudou ,  Takeshi Fujii

IPC: C09D11/18 ,  B43K7/02 ,  B43K7/10 ,  B43K7/12

CPC classification number: B43K7/10 ,  B43K7/02 ,  C09D11/18 ,  B43K7/12

Abstract: A ballpoint pen. In the ballpoint pen, an oil-based ballpoint pen ink composition has an ink viscosity with a range of 500 mPa·s to 15000 mPa·s inclusive at 20° C. and a shear rate of 500 sec−1. A ball has a ball diameter of 0.5 mm or less. A tip distal end portion includes a first swaged portion and a second swaged portion. The first swaged portion has an inclination angle with a range of 90 degrees to 100 degrees inclusive. The second swaged portion is provided closer to a distal end side of a ballpoint pen tip than the first swaged portion and has an inclination angle with a range of 110 degrees to 130 degrees inclusive. An angle of a bottom wall of a ball holding chamber is the same as the inclination angle of the second swaged portion.

公开(公告)号：US20230322010A1

公开(公告)日：2023-10-12

申请号：US18023265

申请日：2021-08-27

Applicant: KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)

Inventor： Yusuke SANADA ,  Hidenori KUDOU ,  Takeshi FUJII

IPC: B43K7/02 ,  B43K7/10 ,  C09D11/18

CPC classification number: B43K7/10 ,  B43K7/02 ,  C09D11/18

Abstract: A ballpoint pen is disclosed. In the ballpoint pen, an oil-based ballpoint pen ink composition has an ink viscosity with a range of 500 mPa·s to 15000 mPa·s inclusive at 20° C. and a shear rate of 500 sec-1. A ball has a ball diameter of 0.5 mm or less. A tip distal end portion includes a first swaged portion and a second swaged portion. The first swaged portion has an inclination angle with a range of 90 degrees to 100 degrees inclusive. The second swaged portion is provided closer to a distal end side of a ballpoint pen tip than the first swaged portion and has an inclination angle with a range of 110 degrees to 130 degrees inclusive. An angle of a bottom wall of a ball holding chamber is the same as the inclination angle of the second swaged portion.

公开(公告)号：US11560489B2

公开(公告)日：2023-01-24

申请号：US16957599

申请日：2018-12-21

Applicant: MITSUBISHI PENCIL COMPANY, LIMITED

Inventor： Hisato Haga

IPC: C09D11/107 ,  C09D11/033 ,  C09D11/17 ,  B43K7/02 ,  B43K8/02

Abstract: Provided is a dispersion liquid of colored resin fine particles for an aqueous ink having excellent stability and a sufficient drawn line intensity; an aqueous ink composition for a writing instrument such as felt-tip pens, marking pens, and ballpoint pens using the dispersion liquid of the colored resin fine particle as a colorant; and a writing instrument loaded with the composition. The dispersion liquid of colored resin fine particles for an aqueous ink includes colored resin fine particles dispersed in water, the colored resin fine particles composed of at least a cyclohexyl (meth)acrylate monomer, and a basic dye or an oil-soluble dye, in which the content of the cyclohexyl (meth)acrylate monomer is 30% by mass or more, and the content of the basic dye or the oil-soluble dye is 15% by mass or more based on the total polymer component constituting the colored resin fine particles.

公开(公告)号：US20220176728A1

公开(公告)日：2022-06-09

申请号：US17436832

申请日：2020-02-27

Applicant: MITSUBISHI PENCIL COMPANY, LIMITED

Inventor： Shuji Ichikawa

IPC: B43K7/02 ,  B43K7/00

Abstract: An ink reservoir unit for a writing instruments using an ink reservoir tube with which low contamination can be achieved considering environmental problems; and a writing instruments using the same. The ink reservoir tube is composed of a composite material in which a raw material is layered on a paper substrate having paper as a substrate. One end section of the ink reservoir tube is coupled to a connection part formed on a writing member or a relay member that holds the writing member to constitute the ink reservoir unit for a writing instrument. In one preferred aspect, a locking means using a male thread formed on an outer peripheral surface is provided to the connection part to be connected to the ink reservoir tube, and the ink reservoir tube is coupled to the relay member that holds the writing member by the locking means.

公开(公告)号：US10761620B2

公开(公告)日：2020-09-01

申请号：US16028333

申请日：2018-07-05

Applicant: Wacom Co., Ltd.

Inventor： Takenori Kaneda ,  Kenichi Ninomiya ,  Kohei Tanaka

IPC: G06F3/0354 ,  B43K29/08 ,  B43K7/02 ,  G06F3/046 ,  G06F3/038 ,  B43K24/16 ,  G06F3/044 ,  G06F3/0487

Abstract: An electronic pen includes an ink writing section including a core body and an ink holding section configured to hold an ink that is supplied to the core body, a circuit board, a transmission section which, in operation, transmits a signal, a connection member including a first side that holds an end portion of the ink writing section, on a side of the ink writing section opposite to the core body, and a second side that holds a first end portion of the circuit board, a pen pressure detector provided adjacent to a second end portion of the circuit board, and a casing configured to accommodate the ink writing section, the connection member, the circuit board and the pen pressure detector such that a tip portion of the core body protrudes from the casing.

公开(公告)号：US10300733B1

公开(公告)日：2019-05-28

申请号：US15866430

申请日：2018-01-09

Applicant: Joseph D Maresh

Inventor： Joseph D Maresh

IPC: B43K5/18 ,  B43K29/10 ,  B43K8/02 ,  B43K5/02 ,  B43K7/02

Abstract: A writing instrument may include an upper pen barrel rotatably connected to a lower pen barrel. A spool valve and fluid reservoirs may be housed in the upper pen barrel. A writing tip secured to the lower pen barrel may be in selective fluid communication with the fluid reservoirs. The upper pen barrel may be rotatable relative to the lower pen barrel of the writing instrument.

公开(公告)号：US20190047317A1

公开(公告)日：2019-02-14

申请号：US16050552

申请日：2018-07-31

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Yuki KUROSU ,  Naoki TAKAGI

IPC: B43K7/02 ,  B32B1/08 ,  B43K5/02 ,  B32B3/26 ,  B32B27/30

Abstract: It is an object to provide a cylindrical molded article that can inhibit the transmission of components having SP values in a relatively wide range. A cylindrical molded article having a cylindrical resin layer I comprising a vinylidene chloride copolymer; and a cylindrical resin layer II disposed inside the resin layer I and comprising a resin having an SP value of 12.0 (cal/cm3)1/2 or more, and having a total thickness of 100 μm or more.

公开(公告)号：US09884508B2

公开(公告)日：2018-02-06

申请号：US14777840

申请日：2014-03-17

Applicant: Kabushiki Kaisha Pilot Corporation

Inventor： Takanori Hoshino

IPC: B43K8/06 ,  B43K5/14 ,  B43K7/02 ,  B43K7/10 ,  B43K8/02 ,  B43K8/03 ,  B43K8/04 ,  B43K5/18

CPC classification number: B43K5/145 ,  B43K5/14 ,  B43K5/1827 ,  B43K7/02 ,  B43K7/10 ,  B43K8/022 ,  B43K8/03 ,  B43K8/04

Abstract: A writing instrument includes: a writing instrument body and an ink cartridge. The ink cartridge includes a bottomed cylindrical container with an opened front end and a plug fitted into an inner circumferential surface of an opening of the container. The writing instrument body includes a projection that opens the ink cartridge when inserted into the opening to press the plug rearward and an air tight connecting portion, formed separately from the projection, that surrounds the projection. The opening is divided into a plurality of openings by air tight fitting the opening in the air tight connecting portion. A plurality of longitudinal channels are formed on an outer periphery of the projection. At least one of the plurality of channels serves as an ink channel and at least one of the other channels serves as an air intake path.

公开(公告)号：US09333795B2

公开(公告)日：2016-05-10

申请号：US14383304

申请日：2013-03-01

Applicant: KABUSHIKI KAISHA PILOT CORPORATION

Inventor： Takeshi Fujii

IPC: B43K7/00 ,  B43K7/10 ,  B43K7/02 ,  B43K1/08 ,  C09D11/18 ,  C08K3/04 ,  C08K5/05 ,  C08K5/1545 ,  C08K5/3417 ,  C09D137/00 ,  C09D11/17

CPC classification number: B43K7/10 ,  B43K1/08 ,  B43K1/082 ,  B43K1/084 ,  B43K7/00 ,  B43K7/02 ,  C08K3/04 ,  C08K5/05 ,  C08K5/1545 ,  C08K5/3417 ,  C09D11/17 ,  C09D11/18 ,  C09D137/00

Abstract: Provided are: an oil-based ink composition for a ball-point pen having a favorable feeling of writing, the favorable deepness of a written trace, favorable light resistance, favorable ink stability over time, and favorable pigment dispersibility; and an oil-based ball-point pen refill using the oil-based ink composition. An oil-based ink composition for a ball-point pen comprising at least a dye, a pigment, and an organic solvent, wherein the dye is at least one salt-forming dye selected from the group consisting of salt-forming dyes of alkylbenzene sulfonic acids and xanthene-based basic dyes, salt-forming dyes of alkylbenzene sulfonic acids and triarylmethane-based basic dyes, and salt-forming dyes of alkylbenzene sulfonic acids and azomethine-based basic dyes.

Abstract translation: 本发明提供一种具有良好的书写感，书写痕迹的有利深度，良好的耐光性，随着时间的有利的油墨稳定性以及良好的颜料分散性的用于圆珠笔的油性油墨组合物。 以及使用油性油墨组合物的油性圆珠笔笔芯。 一种用于圆珠笔的油性油墨组合物，其至少包含染料，颜料和有机溶剂，其中所述染料是选自烷基苯磺酸盐形成染料中的至少一种成盐染料 酸和呫吨基碱性染料，烷基苯磺酸的盐形成染料和三芳基甲烷基碱性染料，以及烷基苯磺酸和偶氮甲碱基碱性染料的盐形成染料。